Year	% of merchandise exports
1962	81.1798091174955
1963	79.69854557205355
1964	84.22030245340572
1965	77.02337845505637
1966	68.02341945070366
1967	64.32225513453731
1968	54.35922352258312
1969	83.75877379974419
1970	64.81725028888023
1971	63.08647348049888
1972	51.3890206755366
1974	37.12823928225102
1975	41.01118558387184
1976	46.464511684334646
1977	40.57419525218455
1978	38.00183440128305
1979	24.496039396362672
1980	30.066380357922544
1982	40.436626850612036
1987	12.862558222610662
1996	19.059532851932758
1997	5.127486245646951
1998	2.8318649728974488
1999	1.4946299130883405
2000	1.6329056633155308
2001	9.977675967119838
2002	5.223306764579801
2003	5.114856982903064
2004	6.8200436751789395
2005	5.9554893066566565
2006	5.849614759283517
2007	6.980127183650114
2008	7.046870379734305
2010	5.427884459923747
2011	5.661254999638901
2012	6.183237463828782
2016	9.933198341297174
2017	13.093713161698686
2018	7.142161901888623
2019	8.690475184829285